Starting apparatus



11?, W25 I J. BUUR S 'IARTING APPARATU S Original Filed Nov. 5, 1914 mi-Roi Patented: Nov. 1 7, 1925.

UNITED STATES PATENT, OFFICE.

I aosnrn anon, on NEW YORK, N.

Y., assreuon, BY MESNE ASSIGNMENTS, 'ro ECLIPSE MACHINE COMPANY. OF ELMIRA HEIGHTS, NEW YORK, A CORPORATION OF NEW" YORK.

STARTING APPARATUS.

Application filed lijovemlier 5, 1914, Serial No. 870,857. Renewed January 10, 1925.

To all whom it may concern:

Be it known that I, J osnrn BIJUR, a citizen of the United States, and residing at NewYork, in the county of New York and 5 State of- New York, have invented a new and Improved'Starting Apparatus, of which the following specification is a full disclosure.

This invention relates to starting appara- 1 tus, particularly pplicable to automobi e engines and the e. 1 1

One of the objects thereof is to provide practical and effective apparatus of the above nature,in which the power of thestarting '18 motor is most economically used.

Another object is to paratus of the above and durable under conditions of use.

Another object is to S0 paratus of the above type in whichthemovements of the parts are automatic and in which the attention required isreduced to a minimum.

provide improved ap- Other objects will be in part obvious from I the annexed drawings and in part indicated in connection therewith by the following analysis of thisinvention.

This invention accordingly consists in the features of construction, combinations of to 'parts, and .in the uni ue relations of the members and in the re ative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully 86 to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawingsde icting a preferred form have been 40 annexe as a partof this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the-views of which Fig. 1 is a side elevation, certain parts being cut away in order .to disclose the construction more clearly.

Fig. 2 is a sectional view; taken substantially along the line A-A"of Fig. 1.

Flg. 3 is a detail elevation of a spring."

erring now to Fig. 1' ofthe drawings,

a source of power, prefthere is shown at 1 erably an electric motor. The armature of its len type of reliable action provide simple ap- .sliglhtly dished, as indicated in in ig. 1.

shaft of this motor is 2 meshing with a larger gear 3 upon a shaft 4 journaled in bearin 5 and 6. 1 Gear 3 is fast upon the shaft 4 and is provided with a hub 7 which turns therewith. There is diagrammatically indicated at 8 aninternal combustion on no, the fly wheel of which is shown at 9 an is provided with a ar portion 10.

haft 4 is threaded throughout a portion h and mounted thereon is a pinion 11 provi ed with an extended hub 12. The various parts are so formed and-mounted that as t e I pinion 11 travels along shaft 4, as hereinafter described, it with theco-acting gear upon the engine. The hub 12 is so formed as to rovide a large ratchet tooth, 13 and this disposition enters into mesh of its metal, in combination with the weight of the in 14 upon the opposite side of pinion 11, an alances the member of which they form a part, or, in other words, results in a material excess of weight upon one side'of its axis of rotation with respect to the 0pposite side.

Loosely mounted upon shaft 4 is a collar 15 connected with the hub 7 by means of a heavy spiral spring 16 for a purpose hereinafter described. This collar is provided with a hub or extension 17 formed to present a tooth 18 for co-action with the tooth 13 upon the hub 12.

At the opposite end of shaft 4 is a collar 19 loosely mounted upon the shaft to permit angular and sliding motion with respect thereto. portion 20 adapted to be engaged by the pin 14, as hereinafter described, and is connected with a by means of a spiral spring 22.

A slight end-wise movement of shaft 4 with respect to its bearin sis permitted by a spring 23 interposed tween the fixed collar 21 and the bearing 6. This spring, shown in plan in Fig. 3, preferably takes the form of a thin annulus of cross section spring steel,

provided with a pinion collar 21, keyed to the shaft,

The action of the above described apparatus is'substantially as follows The pinion 11 normally occupies the position indicated by dotted lines in Fig. 1

of the drawings. Upon motor 1 being start- 'ed it drives the gear 3 in the direction indicatcd by the arrow, giving a corresponding direction of turning to the threaded shaft 4. This action causes the pinion 11, with associated parts, rapidly to move along shaft 4 in the direction of gear 3; the longitudiment as the spring 16 is at the first instant merely coiled, thus storing the momentum of the rotating parts for a more effective action in driving gear 10 and starting the engine 8. Upon the engine being started, it in turn drives pinion 11 at a higher rate of speed than that of the shaft 4: and by an action the reverse of that first described, the pinion immediately moves out of mesh. The pinion, now turning rapidly, passes toward collar 19 until pin 14 comes into engagement with the tooth 20, thus bringing the pinion down .to the rate of rotation of shaft 4. It may be noted that the shock of engagement between the above parts is cushioned by the coiling of the lighter spring 22. The pinion stays in this position, turning with shaft 4 until the latter comes to rest, the centrifugal effect of its unbalanced weight tending to cause it to maintain the same rate of rotation as the shaft. I

The teeth upon the pinion 11 are pointed at the end, as indicated at 24, in order to insure proper meshing with the teeth of gear 10 which are likewise pointed, as ind?- cated at 25. Also the pointed ends of all of these teeth are rounded inwardly toward the axis of the gears as indicated at 26. If, however, it should so happen that these teeth meet precisely end to end, there is no binding of the parts as a slight endwise movement is permitted to the entire shaft 4: with the several devices mounted thereon. This movement tends to compress or flatten the disc spring 23, thus preventing the pinion from being jammed against the gear by the thread and permitting a slight rotation of the pinion to bring the teeth into proper meshing relation. It may also be noted that this disposition of the parts so that the pinion moves into mesh in the direction here shown, instead of the reverse, presents certain advantages in the matter of compactness of construction and efficiency of action. Furthermore, the pitch of the screw thread on shaft 4: is greater than the angle at which the pinion would jam at the end of suchthread. This angle varies with the coefficient of friction of the materials used and 18, for example, with steel parts about 1-1".

It will thus be seen that there is provided apparatus in which the several objects of this invention are achieved.

As many changes might be made in the above construction, and as many apparently different embodiments might be made of this invention without departing from the scope thereof, it is intended that all features herein described or shown in the accompanying drawings shall be interpreted as i1- lustrative and not in a limiting sense.

I claim:

I. In apparatus of the class described,-in combination, an internal combustion engine, a motor, a threaded shaft driven from said motor, a gear threaded upon said shaft, a gear connected with said engine, said gears being positioned to come into mesh as said shaft is driven from said motor, and means adapted for endwise movement of said threaded shaft comprising a disc spring surrounding said shaft.

2. In apparatus of the class described, in combination, an internal combustion engine, a motor, a threaded shaft driven from said motor, a gear threaded upon said shaft, a gear connected with said engine, said gears being positioned to come into mesh as said shaft is driven from said motor, and a disc spring surrounding said shaft and positioned to permit an endwise movement of said threaded shaft and tending to. return it to normal position.

3. In apparatus of the class described, in combination, a rotatable shaft, a driving membermounted thereon for longitudinal movement thereon for engaging with a member of the engine to be started, and for rotary movement therewith, a part loosely mounted on the shaft for independent ro tary and longitudinal movement and adapted to be operatively connected with the drivingmember in the driving operation, and a yielding connection between said part and the shaft.

4. In apparatus of the class described, in combination, a rotatable shaft, a driving member mounted thereon for longitudinal movement thereon for engagement with a member of the engine to be started, and for rotary movement therewith, a part loosely mounted on the shaft for independent rotary and longitudinal movement and adapted to have clutch connection with the driving member in'the driving operation, and a yielding connection between said part and the shaft.

5. In apparatus of the class described, in combination, a rotatable shaft, a driving member mounted thereon for longitudinal movement thereon for engagement with a member of the engine to be started, and for rotary movement therewith. a part loosely mounted on the shaft for independent rotary andflongitudinal movement, said part and said member having cooperating clutch jaws mousse a yielding connection between said part and combination,

the shaft.

6. In apparatus of the class described, in a' rotatable shaftfa driving member mounted thereon for longitudinal movement thereon for engagement with a member of the engine to be started, and for rotary movement therewith, -a part .loosely mounted on the shaft for independent rotary and longitudinal movement, said member having an extension provided with an end clutch 'aw, and said part having a cooperating end clutch'j aw engaging the other aw in the driving'operation, and a yielding connec-\ tion between said part and the shaft.

7. In apparatus of the classdescribe'd, in combination, a rotatable shaft, a drivin member mounted thereon for longitudina movement thereon for engagement with a.

member of the engine to be started, and for rotary movement- .therewith, a part loosely mounted on the shaft for independent rotary and longitudinal movement ,and adapted to member in the driving operation, and .a torsion spring between said part and the shaft. -8. In apparatus of the class described, 111 combination, a rotatable shaft, 9. drivin member mounted thereon for longitudina movement thereon for engagement with a member of the'engine to be started and'for' A rotary movement therewith, a collar loosely mountedon the shaft for independent rotary ada ted to be operatively connected with the andlongitudinal movements and riving 1 member in the drivin 'o ration, and atorsion spring connecte with the collar and the shaft respectively. j

9. In apparatus of the class descr bed, in

combination, a rotatable shaft, a drivin member mounted thereon for longitudina movement thereon 'for engagement, w th a spectively.

member of the engine to be. started and for rotary movement therewith, a collar loosely mounted on shaft and adapted to be operatively connected with the driving memher in the driving 0 eration, a second collar secured to said sha t, and a torsion spring encircling and fastened to the two collars re- 10. In apparatus of the class described, in

combination, a rotatable screw shaft, a pinion threaded thereon-for longitudinal movement thereon for engagement with a memher of the engine to be startedand forrotary movement .therewith, a collar loosel'y 'mounted on the shaft, for independent .ro-

tary and longitudinal movements, said collar and pinion having cooperating end clutch jaws which engage during the driving operation, and a torsion spring between the collar and the shaft.

11. In apparatus of the class described, in

combination, a rotatable shaft, a driving position of the driving to be engaged thereby for rotarial movement between such collar and sha e operatively connected with the driving memberof the engine to be member mounted thereon for longitudinal movement thereon for engagement with a member of the engine to be started and for rotary movement therewith, a collar loosely mounted on' the shaft 'adjacentwthe normal member and adapted when the driyingmember is returned to its normal pos1t1on, and a yielding connection 12. In apparatus of the class described, in

combination, a rotatable shaft, a driving member mounted thereon for longitudinal movement'thereon for engagement-with a member of the engine to be started and for rotary movement therewith, a collar loosely mounted on the shaft adjacent the normal position of the driving to be engaged thereby for rotarial movement when the driving-member is returned to its hormal position, and a torsion spring between such collar and shaft.

13. In apparatus of the class described, in combination, a rotatable shaft, a member mounted thereon for longitudinal movement thereon for engagement with a member of the engine to be started and for rotary movement therewith, a collar loosely mounted on the'shaft adjacent the normal engage when the driving member is returned to normal driving connection shaft. j

14. In apparatus of the class described, in combination, a rotatable shaft, a driving member mounted thereon for movement thereon for gisition, and a tween such co yieldin lar an engagement with a started and for rotary movement therewith, a collar loosely mounted on the. shafthadjacent. the normal position of the drivin member and adapted to be engaged there y for rotarial movement when the driving member is returned to its normal position, said driving member and collar having. cooperating. jaws which 7 engage when the drivlng member is returned to normal position, a second collar secured 'tothe shaft and adjacentv to. the first collar, and a torsion spring secured to the two collars respectively.

15. In apparatus of the class described, in combinatlon, a rotatable shaft, a driving membermounted thereon for longitudinal movement thereon for engagement with a A 7 member of the .engine to be started and for a collar'loosely rotary movement therewith, mounted on the shaft adjacent the normal position of the driving member; and adapted'to be engaged thereby for rotarial mov ment when the driving member is returned driving inc longitudinal turned to normal position, a second collar secured to the shaft and adjacent the first collar, a yielding connection between the two collars, a bearingfor the end of the shaft adjacent such collars, and a spring interposed between the bearing and the second collar to permit of yielding endwise l0 movement of the shaft, A

In witness whereof, I hereunto subscrib my name.

JOSEPH BIJUR. 

